Table 2 Male cells development stages of forkbeard, Phycis phycis
From: Reproductive strategy of forkbeard, Phycis phycis, from the Portuguese coast
Spermatogenic stage | Description | Diameter (μm) |
|---|---|---|
Spermatogonia (Sg) | Appear single or in groups; round shape with a conspicuous cytoplasm and a prominent central nucleus | 6.44–9.42 (7.96 ± 0.49) |
Primary spermatocytes (Sc1) | Always appear enclosed in cysts; smaller than Sg | 3.64–5.77 (4.63 ± 0.34) |
Secondary spermatocytes (Sc2) | Similar to Sc1 but smaller | 2.53–3.96 (3.28 ± 0.26) |
Spermatids (St) | Smaller than Sc2 but still found enclosed in cysts | 1.54–2.94 (2.14 ± 0.19) |
Spermatozoa (Sz) | Similar to St but with cilia; enclosed in cysts or free in the lumen | 1.36–2.04 (1.73 ± 0.13) |